Cell - the unit of life MCQ Solved Paper for LIC AAO

1. Which of the following statement is false?
A. The ribosomes of a polysome translate the mRNA into protein.
B. Mitochondria divide by fragmentation.
C. All cell arise from pre-existing cells.
D. The lipid component of the membrane mainly consists of phosphoglycerides.
Answer : B

2. Centrifugation of a cell results in the rupture of the cell membrane and the contents compacting into a pellets in the bottom of the centrifuge tube. Bathing this pellet with a glucose solution yields metabolic activity including the production of ATP. One of the contents of this pellet is most likely which of the following?
A. Cytosol
B. Mitochondria
C. Lysosomes
D. Golgi bodies
Answer : B

3. pH of vacuolar cell sap is
A. neutral and isotonic.
B. alkaline and isotonic.
C. acidic and hypertonic.
D. equal to cytoplasm and isotonic.
Answer : C

4. Grana are
A. protein storing plastids.
B. coloured plastids.
C. stacks of thylakoids.
D. individual thylakoids present in stroma.
Answer : C

5. Which one of the following organelle given below is correctly matched with its function ?

A. Golgi apparatus Protein synthesis
B. Golgi apparatus Formation of glycolipids
C. Rough endoplasmic reticulum Protein synthesis
D. Rough endoplasmic reticulum Formation of glycoproteins
Answer : C

6. Match column-I with column-II and choose the correct option.

Column-I	Column-II
A. Tonoplast	I. Contain digestive enzyme
B. Contractile vacuole	II. Store metabolic gases
C. Food vacuole	III. Excretion
D. Air vacuole	IV. Transport of ions in plants

A. A IV; B III; C I; D II
B. A II; B III; C IV; D I
C. A IV; B II; C III; D I
D. A I; B III; C II; D IV
Answer : A

7. 9.A student was given cell samples (A and B) to identify parts which are highlighted. He observed the samples under the microscope and list down the function of the part of cell sample. The information collected by the student is listed in the table below, on the basis of which the student infers that the samples contain the organelles.

Sample A	Sample B
Make energy available for cellular metabolism	Generates ATP and synthes izes s ugar
Absent in cell that carry oxygen throughout the body	Present in plant cell
Called the energy currency of cell	Source o f all the food energy

Explain why the samples were belonged to eukaryotic cell and not prokaryotic cell? Because,
A. eukaryotic cell have membrane bound organelles.
B. eukaryotic cell have non - membrane bound organelles.
C. eukaryotic cell are smaller and multiply more rapidly than prokaryotic cells.
D. eukaryotic cell are larger and multiply more rapidly than prokaryotic cells.
Answer : B

8. Function of contractile vacuole in Amoeba is
A. excretion and osmoregulation.
B. digestion and respiration.
C. osmoregulation and transportation.
D. none of the above.
Answer : A

9. In which method of transport, plasma membrane does not require carrier molecule?
A. Active transport
B. Facilitated diffusion
C. Simple diffusion
D. Na⁺ K⁺ pump
Answer : C

10. Which one of the following pairs is not correctly matched?
A. Cristae The tubular structure formed by the folding of the inner membrane of the mitochondrion.
B. Plasmodesmata The membrane surrounding the vacuole in plants.
C. Grana Membrane bound discs in chloroplasts that contain chlorophylls and carotenoids.
D. Middle lamella Layer between adjacent cells walls in plants derived from cell plate.
Answer : B

11. Which of these is wrongly matched?
A. Chloroplasts Chlorophyll
B. Elaioplasts Starch
C. Chromoplasts Carotenoids
D. Amyloplasts Carbohydrates
Answer : B

12. _______________ is the important site of formation of glycoproteins and golycolipids.
A. SER
B. Lysosome
C. Golgi apparatus
D. Mitochondria
Answer : C

13. Cell sap is a
A. living content of cytoplasm.
B. nonliving content of cytoplasm.
C. nonliving content of vacuole.
D. living content of vacuole.
Answer : C

14. Golgi apparatus is absent in
A. higher plants
B. yeast
C. bacteria and blue-green algae
D. None of the above
Answer : C

15. Which of the following pair are correctly matched ?
(I) Amyloplasts Store proteins
(II) Mitochondrion Power house of the cell
(III) Stroma Chlorophyll pigment
(IV) Axoneme 9 + 2 array
A. (I) and (III) only
B. (II), (III) and (IV) only
C. (III) and (IV) only
D. (II) and (IV) only
Answer : D

16. Which one of the following combination is mismatched?
A. Glycocalyx May be capsule or slime layer
B. Pili Reproduction
C. Cell wall Protective, determines shape, prevents from bursting
D. Flagella, pili and fimbriae Surface structures of bacterial cell
Answer : B

18. Consider the following statements and choose the correct statement.

1. The endomembrane system includes mitochondria, chloroplast and peroxisomes.
2. Smooth endoplasmic reticulum is the major site for synthesis of lipid.
3. Rough endoplasmic reticulum is actively involved in protein synthesis.
4. Mitochondrial matrix possesses single circular DNA, a few RNA and 80S ribosomes. Of the above statements.

A. (i) and (iii)
B. (ii) and (iv)
C. (iii) and (iv)
D. (ii) and (iii)
Answer : D

19. Plastids storing fat are called
A. Elaioplasts
B. Sphaerosomes
C. Aleuroplasts
D. Pyrenoids
Answer : A

20. Which of the following statements are incorrect ?

1. Plant cells have centrioles which are absent in almost all animal cells.
2. Ribosomes are the site of protein synthesis.
3. The middle lamella is a layer mainly of calcium carbonate which holds the different neighbouring cells together.
4. In animal cell, steroidal hormones are synthesized by smooth endoplasmic reticulum. Of the above statements

A. (i) and (iii)
B. (iii) and (iv)
C. (ii) and (iv)
D. (i) and (iv)
Answer : A

21. Which of the following terms is not correctly matched with its feature?
A. Osmosis Movement of water by diffusion.
B. Nucleoplasm Site of active synthesis of ribosomal RNA.
C. Mesosome Infolding of cell membrane and characteristics of eukaryotes.
D. Pili Elongated tubular surface structures (made of special protein) of bacteria.
Answer : C

22. Prokaryotic and eukaryotic flagella differ in the
A. type of movement and placement.
B. location and mode of functioning.
C. microtubular structure and function.
D. microtubular organization and type of movement.
Answer : D

23. Both the membranes of mitochondrion are
A. structurally different but functionally similar.
B. structurally as well as functionally different.
C. structurally similar but functionally different.
D. structurally different but functionally similar.
Answer : B

24. The best way to identify a cell as either prokaryotic or eukaryotic is to determine whether
A. it came from a single-celled or multicellular organism.
B. it has a nucleus.
C. it has a plasma membrane.
D. it has cytosol.
Answer : A

25. Which of the following statements is/are correct ?

1. The shape of the cells may vary with the function they perform.
2. Human RBC is about 7.0 ??m in diameter.
3. Cytoplasm is the main area of cellular activities.
4. Various chemical reactions occur in cytoplasm to keep the cell in the living state.

A. (i), (ii), (iii) and (iv)
B. Only (i) and (ii)
C. Only (iv)
D. None of the above
Answer : A

26. Lysosomes contain
A. carbohydrates
B. hormones
C. nucleic acids
D. hydrolases.
Answer : D

27. Match column-I with column-II and choose the correct option.

Column-I	Column-II
(Chromosome)	(Position of Centromere)
A. Metacentric	I. At the tip
B. Submetacentric	II. Almost near the tip
C. Acrocentric	III. At the middle
D. Telocentric	IV. Slightly away from the middle

A. A III; B IV; C II; D I
B. A IV; B III; C II; D I
C. A I; B II; C III; D IV
D. A IV; B III; C I ; D II
Answer : A

28. The diagram given below represent a filuid mosaic model of plasma membrance. Match the components marked as A, B, C, D and E in the diagram below from the list (i) to (vii).

1. Sugar
2. Protein
3. Lipid bilayer
4. Integral protein
5. Cytoplasm
6. Cell wall
7. External protein

A. A - (i), B - (ii), C - (iii), D - (iv), E - (v)
B. A - (ii), B - (i), C - (iii), D - (iv), E - (v)
C. A - (i), B - (ii), C - (iii), D - (iv), E - (vi)
D. A - (i), B - (ii), C - (iii), D - (vii), E - (v)
Answer : A

29. 8.A student was given cell samples (A and B) to identify parts which are highlighted. He observed the samples under the microscope and list down the function of the part of cell sample. The information collected by the student is listed in the table below, on the basis of which the student infers that the samples contain the organelles.

Sample A	Sample B
Make energy available for cellular metabolism	Generates ATP and synthes izes s ugar
Absent in cell that carry oxygen throughout the body	Present in plant cell
Called the energy currency of cell	Source o f all the food energy

Identify the part highlighted in the sample A and B and explain why they were called as semi-autonomous organelles?
A. Sample A - Mitochondria, Sample B - Chloroplast; because both the organelles are double membrane bound structure.
B. Sample A- Mitochondria, Sample B - Chloroplast; because they both are capable of synthesis of their own proteins only.
C. Sample A - Mitochondria, Sample B - Chloroplast; because they are capable of synthesis of their own proteins and contain their own DNA.
D. Sample A- Mitochondria, Sample B - Chloroplast; because they contain their own DNA to transfer the genetic information from one generation to another.
Answer : C

30. Axoneme ith 9 + 2 microtubular arrangement occurs in
A. cilia
B. flagella
C. both (a) and (b)
D. centriole
Answer : C

31. According to widely accepted fluid mosaic model cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?
A. Proteins in cell membranes can travel within the lipid bilayer.
B. Proteins can also undergo flip-flop movements in the lipid bilayer.
C. Proteins can remain confined within certain domains of the membrane.
D. Many proteins remain completely embedded within the lipid bilayer.
Answer : B

32. Match column-I and column-II and select the correct answer

Column-I	Column-II
A. Bacteria without walls	I. Lysosome
B. Small circular DNA	II. Mycoplasma cells
C. Flattened sacs in	III. Thylakoid a chloroplast
D. A vesicle in which	IV. Plasmid hydrolytic enzymes are stored

A. A III; B IV; C II; D I
B. A II; B IV; C III; D I
C. A I; B II; C III; D IV
D. A IV; B III; C I ; D II
Answer : B

33. Identify the components labelled as A, B, C, D and E in the diagram given below from the list (i) to (viii).

1. Cristae of mitochondria
2. Inner membrane of mitochondria
3. Cytoplasm
4. Smooth endoplasmic reticulum
5. Rough endoplasmic reticulum
6. Mitochondrial matrix
7. Ribosome
8. Nucleus

A. A - (viii), B - (v), C - (vii), D - (iii), E - (iv)
B. A - (i), B - (iv), C - (vii), D - (vi), E - (iii)
C. A - (vi), B - (v), C - (iv), D - (vii), E - (i)
D. A - (v), B - (i), C - (iii), D - (ii), E - (iv)
Answer : A

34. Which one of the following is not considered as part of the endomembrane system?
A. Golgi complex
B. Peroxisome
C. Vacuole
D. Lysosome
Answer : B

35. The cytoskeleton is a proteinaceous network of fibres in the cytoplasm. It is involved in
A. mechanical support.
B. motility.
C. maintenace of cell-shape.
D. all of the above
Answer : D

36. Which of the following statements are correct ?

1. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome.
2. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins.
3. RuBisCO is the most abundant protein in the whole biosphere.
4. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system. Of the above statements

A. (iii) and (iv)
B. (i) and (ii)
C. (ii) and (iii)
D. (i) and (iv)
Answer : A

37. Select the incorrect statement about prokaryotic ribosomes.
A. 50S and 30S subunits unite to form 70S ribosomes.
B. Polysome/polyribosome consists of many ribosomes only.
C. Ribosome is the site of protein synthesis.
D. Polysome indicate the synthesis of identical poolypeptide in multiple copies.
Answer : B

38. Which of the following organelles is directly connected to the outer membrane of the nucleus in a eukaryotic cell?
A. Mitochondrion
B. Lysosome
C. Golgi apparatus
D. Endoplasmic reticulum
Answer : D

39. What would happen if lysosomes get ruptured in a cell?
A. Cell dies
B. Cell shrinks
C. Cell swell up
D. Nothing would happen
Answer : A

40. Basal bodies are associated with the formation of
A. phragmoplast
B. cilia and flagella
C. cell plate
D. kinetochore
Answer : B

41. The membrane of the erythrocytes has approximately ___% of proteins and ___% lipids.
A. 42, 50
B. 52, 40
C. 50, 50
D. 60, 40
Answer : B

42. The given figures show two types of cell. Which structures are common to both the cells?

A. Nucleus and cell wall
B. Nucleus and cytoplasm
C. Ribosomes and flagella
D. Ribosomes and cell wall
Answer : D

43. Identify the cell organelle given below. Which is an important site of formation of glyeoproteins & glycolipids

A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
C. Golgi body
D. mitochondria
Answer : C

44. Statement 1: Centrosomes and centrioles are related to each other.
Statement 2: Centrosome usually contains two cylindrical structures called centrioles.
A. Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.
B. Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.
C. Statement -1 is true and statement - 2 is false.
D. Statement -1 is false and statement - 2 is true.
Answer : A

45. An organalle devoid of membrane covering is
A. vacuole
B. ribosome
C. peroxisome
D. lysosome
Answer : B

46. Most of water, in mature plant cells occurs in
A. nucleus
B. cell wall
C. vacuoles
D. cytoplasm
Answer : C